Main Spindle Bearings - NTN Global
2020-3-18 · taper gauge is recommended for higher accuracy of the main spindle. Refer to '6 Handling of Bearings, ⑧ Tapered bore cylindrical roller bearing and main spindle taper angle' in the Technical Data section for more information on taper angle. ③ Bearing designations ④ Accuracy of tapered bore Precision class P5:JIS class 5 P2:JIS class 2
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